java - PDF 渲染器库中的缩放选项

Question

我正在检查https://pdf-renderer.dev.java.net/的api我想将 PDF 转换为缩放级别为 100% 的图像。

有人尝试过吗？

Answer 1

    int widthPage  = (int)page.getBBox().getWidth();
    int heightPage = (int)page.getBBox().getHeight();

    if(page.getAspectRatio()<1){
        widthPage  =  (int)(widthPage / page.getAspectRatio() );
        heightPage =  (int)(heightPage / page.getAspectRatio() );
    }

    // get the width and height for the doc at the default zoom
    Rectangle rect = new Rectangle(0, 0, (int) widthPage, (int) heightPage);
    // generate the image
    Image img = page.getImage(rect.width, rect.height, // width & height
            rect, // clip rect
            null, // null for the ImageObserver
            true, // fill background with white
            true // block until drawing is done
            );
    // save it as a file